Joseph, I had the same thoughts, but how would it be done properly?

Clawfoot tubs are typically fed from fixtures that rise from the floor on chromed pipes. If there are no holes to mount them then they typically hang over the edge of the tub. Similarly, the drain pipes are left exposed but are also chromed.

Clawfoots typically don't have wall mounted shower heads....how is that supposed to work? If they have a shower head at all, it's typically integral with the shower curtain (which goes all the way around the tub).

Just google images of "clawfoot tub fixtures" for examples.

Some idiot roughed in a regular tub/shower hookup. It's not going to work.

Google images of clawfoot fixtures

I'm wondering why your friend didn't purchase the faucets and fixtures for the tub? I will have a wall mounted fixture for my clawfoot tub but I'm having my builder purchase the fixture I choose. Link to Wall Mount Faucets

Asking for wall mounted shower fixtures was a mistake.

Free standing tubs are not meant to have showers unless it is a hand held shower wand. That configuration is common in Europe. To convert this tub to a fixed overhead shower it is necessary to install an exceedingly clumsy 4 sided shower curtain rod that is hug from the ceiling with a supply pipe or hose from a tub mounted faucet set with a diverter valve. I own one of these horrible things and I wish I had the space to make it a proper tub or a shower stall. It is claustrophobic and provides no way to catch your balance since you are wrapped in plastic coated nylon that tends to cling to you with the shower on and it is necessary to bend very low to adjust the two faucet handles. I can't imagine why anyone would intentionally build one of these things.

The OP's configuration would need a drain in a waterproof floor.

Floor-mounted tub fill and shower wand:

Was the plumber's name Rube Goldberg?

There's nothing wrong with the plumbing; as far as I can tell its what the owner asked for. There are several solutions none of which involve wall mounting the shower fixtures.

The owner should ask the plumber to install a floor mounted set or a standard tub and tile the walls. You can't expect the plumber to make wall mounted fixtures work; it simply not possible.

I had that shower contraption once. Yeah, don't do it.

Juse do something like jds's second picture.

"...how would it be done properly?"

Like this.

This is extremely poor design and design documentation . Who designed this and provided the specs to the builder and plumber?

sorry to have some fun at your expense but definitely just had a whiskey, tango, foxtrot moment.

That is massive water damage waiting to happen. Fail on the design. Fail on the plumbing execution because of the poor design, but a plumber is only as good as the instructions he is given. Fail on the ''refinished'' tub too. That is a short term solution that will peel in no time. Retiring the porcelain is the only thing that works, and there is no one left in the US that does that. Even when there was, it was 2x as expensive as just buying a new tub.