You must be one of those Westside types.....lol.
Yeah, definitely agree about where snatch grip hit. I just started to incorporate them and I felt them in my upper back.
OP, I wouldn't go heavy at first and would just work on my form. Besides, you don't know what the impact of them will be on your recovery. It's always easier to add weight to the bar if you find it too light and non-impactful. If you start too heavy then your ego will get in the way of going lighter (at least mine does).
There was also a really good article just written on the snatch grip dead. If you go to the front page and check it out you'll see it there.