For some people it might be too much, but I love it. Unique and special.

Very cool. Would have it run in both directions?

The logistics are tricky. Stone is 2cm or 3 cm. floor tile is 3/8”. The channel in all of the materials has to be designed into the framing system. Everything has to end up in the exact right spot from the plans. How often does that happen?

I'm leaning towards honed grey slate, so the tilesetter would adjust to level. A previous project, I used polished copper colour slate tiles (12"x12") for a similar area and split quartzite for the first floor entry, so I'm already partial to natural stone. Will check out the polycor, but remain sceptical of these thin "miracle" composites. (Dekton comes to mind.)

@worthy Dekton gets poor ratings for impact resistance, but it is manufactured as a composite. The new Polycor product is an actual cut slab with all the reinforcement on the back side. It's so new that there isn't a lot of consumer-created information out there about how well it wears, but the material data provided by the company is impressive. I would use it for my new countertop except I need an unsupported span of about 6", and at only 1 cm, the Polycor isn't rated for that wide of an overhang. I found out about this product from a local slab supplier that says it is the newest trend in countertops because you can use the material for counters, floors and walls to match everything. I thought of it immediately when I saw your project.

I think it's a very cool look, and you'd have to be careful to plan how it would affect the rest of your space. You want it to look intentional with how it lines up with everything - your furniture, windows, walkway, etc. In your inspiration pic, it divides two flooring colors and goes straight down the hallway without any impediments (furniture.)

For example, with your current layout, would it bother you if your couch and kitchen table/chairs were only partially on the stripe? Can you arrange the furniture to make it look intentional along the stripe? (and does the stripe have a good and logical end point at each end?)

Or would you rather zig zag the line to either line it up with furniture, windows, or wall? (and again, are there logical end points?) Or... would that make the bar stools feel too 'corralled'?

I'm not a designer, but I think that planning all those elements together would make the difference between something that looks truly designed and something that looks more like a wannabe - like it goes with your counter but not quite with everything else.

Not a fan of accenting the bowling alley look. It would look better wider, not as that little strip. That reminds me of the colored lines on the floor that leads you around a hospital to the different departments.

Now if you used a wide swath of Prexury material in a rose quartz, amethyst, or red jasper, and backlight it...? http://www.stone-systems.com/products/prexury/

Nope! It’s reminiscent of when sitcom sibs are fighting and they draw a line down the middle of their (shared) bedroom using tape. (Or when a couple is getting a divorce but still live with each other and draw a line down the middle of the house.)

The inspiration pic seems to be a hallway, which I could learn to live with, but your plan looks like it would bisect the living spaces. Having that stripe would really annoy me, specially with rug and/or furniture placement.

Follow the grey line to hemodialysis. Not a great reference!

Love it!