I wasn't a strong man when I did StrongLifts, but I will say that the high bar squat was easy to learn. Switching to low bar was uncomfortable enough for me that I hired a coach. That's a huge personal cost for me, but I believe in the program. If I didn't, I would be doing high bar or forking over money for a chiropractor.
This would be more impressive if I had a 1,000# total and wasn't just a random guy on the internet.
Rip talks about it here (video): High Bar VS Low Bar Squat - YouTube
He writes about it here: High vs Low Bar: So Fucking What?