I really like the V5 shape, I wish Spitfire had a narrow shape like that.
Is the normal Conical shape not quite what you want? Not Conical Full, but just Conical?
I have had both come through my hands and they come up fairly close when looking at them, only a single mm in total width difference in the most common sizes, but then it changes a bit more over 54 mm.
They are not as common to get hold of in some areas though.
Conical
52 x 31.3
53 x 32
54 x 32.1
Bones V5
52 x 30
53 x 31
54 x 31
Different compounds though, so that is more the thing for most people I know - they are either a Spitfire guy or a Bones guy, nothing wrong with either - just preference of wheel, which for me is formula first, then shape, etc.
What size wheels do you usually ride?
* Also this is when someone usually says they want the Radial Slim back, which would work well in that profile.