The 10 inch SS BS was "recommended" to me as well when I bought my Wolf rangetop. I don't have the grill but I don't see why that would make a difference. I think it's an aesthetic choice and there's no functional reason to use theirs as opposed to a BS of your choosing. I used a marble mosaic and I love it; it cleans up as easily as SS would and I'm a fairly splashy cook. (Apologies to those of you who are tired of looking at this picture!)

Our is a vintage Chambers stove that has its own highback backsplash built in. I love the integrated look and it cleans up easily with no worries (stove not installed yet, but I use the area for prep in the meantime). You can always install a bs around/above it if you want... Since you were doing simple white tiles, it is not like you are giving up a "feature" there anyway.
Sharonite's pic is gorgeous though, so YMMV.

Sharonite that backsplash is absolutely beautiful!!

I'm still not sure...

One more pic: I was on a tile store website while answering another question and noticed this picture of the 36" DF Wolf range with griddle and just a tile backsplash! I don't think adding the Wolf SS BS would look bad at all, but thought you'd like to see something more similar to your range with the tile only option.

THANK YOU!! I decided today no SS Riser!! Great pic! I had looked for other pics today & didnt find much, glad to see another!

The dual fuel range comes with island trim which is about 2 inches tall. I am getting the 60 inch DF Wolf, and I am doing a subway tile backsplash on top of the island trim.

Wow the 60!! That's going to be fantastic!! I didn't know about the "island trim" I don't see anything about that in the specs...

My dealer told me that they were standard on dual fuel, but not on the all gas.