I used to have 4 wedges a 46(i20 set) and vokey (50, 54, 58). I would use the 50 and 54 for gap control, the 50 for chipping, and the 58 for pitches and sand shots. Got my bounce all wrong on them and they were not right for me. Not much for fitting option here in Sconie land. My gap shots were inconsistent because I had too little bounce, and my sand shots were a bit heavy at times for the same reason.
So I change the way I went about it. I got rid of my vokey's, not because I think vokeys are bad, I love them. I just wanted to simplify around the greens and control my gap shots better. I picked up a i20 gap to match my set for gap/partial shots only, and an TM ATV 56 degree for everything around the green. I liked it because at 56 degrees I could play just about any lofted shout I wanted to with that weird sole design. What remains to be seen is if I can chip as well with it. A bit different going from 50 to 56 for chip shots.
To your original question. I am the weird lower HC'er that uses a matching gap to his set, and I actually like that better for full and 3/4 shots. Especially in the often soft conditions we have here.