Usually it's 8-10x leverage, as long as you avoid instruments that are inherently leveraged like futures.
I know a few people that have used first loss money at the inception of their funds, but not via any commingled program. The way it was described to me it looks like a regular SMA but you pledge your assets ("first loss tranche") against it's balance. They do want detailed account statements on daily basis and hold you to a very well defined mandate, which might be annoying for a discretionary manger. However, when you are showing your AUM and track record, people see that leveraged amount as the AUM and returns on the leveraged amount as your track record.
PS. I have never dealt with them myself, so this might be not completely accurate