I just got one of these. Was curious, particularly with the alleged "all knobs in" setting for the 1176 mode. For reference, I've owned and gigged a lot of different compressors, and always have come back to my FEA dual band as my go-to live. In my home studio I run an Empirical Labs Mike-E which is a preamp and Distressor setup which can cop the 1176 driven sound really well ("toasty" ftw).
I haven't gigged it yet, but in spending an hour or two with it and comparing with the FEA, I can say that I'm impressed with the HL, and it is very different than the FEA. The FEA is dead quiet and more towards the "transparent" side of things, at least the way I tend to run it (high threshold, med ratio on low band, medium threshold, low ratio on high band). The dual band allows you to do some interesting things like both squash and boost the low end relative to higher frequencies (and that crossover is user set). It isn't a parallel compressor though, and that was one reason I was curious about the HL.
At first I didn't like the HL. Seemed noisy to me, almost like a Ross style box. But I started twiddling knobs and found that the three compressor types have different behaviors and levels (duh!). I really like the Super Symmetry mode, though it is a bit dark. The FET (1176) mode was what I was most interested in, and after working with it I found some really interesting tones. Not at all like the FEA which is "your tone, just a bit fatter and articulate". Instead the HL could do some level boosting, with the blend and output giving a lot of flexibility. The "all buttons in mode" is pretty dope if you're into that thing. Reminds me of tube breakup/compression, and you can dial it up very much as an effect, with the initial attack giving a pop, then as much bloom (or not) as you want.
Still a lot of experimentation to do, but so far it is has me coming back for more. I was thinking of getting the Cali76 but I think this will be a more interesting unit. Not going to send the FEA packing - different beast. Just a question if I can fit both on my new small board
Also, I'm running a OneSpot at the moment. Seems to be behaving (running it early in the chain), but will likely move to am MXR mini brick and use an isolated 300 mAh outlet.