I'm not sure what "low mantis" is, so I can't say whether or not he does teach it. I know the stuff he teaches is 7* influenced, but I'm not a "mantis guy", so I only did a little stuff here and there. I learned a few of the forms, and kept track of things like the principles (12 character principles), techniques, and other stuff I thought I might be able to use with my Northern Shaolin.
As far as the depth of the mantis taught there. It goes about as deep as it can for a "mixed style" school. I'm sure you could grill Sifu for more stuff other than what he shows, but the way he teaches is to give the students a good understanding of each of the styles, and let them decide what's right for them, so they can approach him for the "deeper" stuff. I'm a Northern S. guy, so I grilled him about that, so I can't say how deep the mantis would be. I've seen a couple of guys that really like the mantis stuff, and really try to get deep into it, but I've never really seen anyone excel at it. I think a lot of what's missing may be on the student's end, though. Sifu likes sparring, and he's not against it at all, but he doesn't have a regular scheduled sparring class, or session. But the students don't really take an initiative to set a group up outside of the regular cirriculum (sp?). The guys that spar now (Tigerstyle and myself included), were part of the "older group", since we were there when he first started teaching in Vegas, and we sparred all the time, but we don't see many of the younger generation guys willing to put the gloves on.
It's not like we hurt them, or they're cowards, it's just that some of them have the wrong idea about sparring (I'm figuring they got it somewhere in the school, but I haven't found the "source" yet), developing bad habits, and incorrect technique usage. They have too much faith in their forms. It wouldn't be so bad if I saw them doing more drills, and practice their kicking and punching more often (I've noticed a few cases of "flowery fists" and "embroidered feet" if you catch my meaning). Again, that's only a small "clique" of guys. There are still a few hard core guys that I still learn a lot from, just by talking to them.
I haven't been down to the school, so I couldn't ask around about the Hung Gar guys, but I'll let you know as soon as I can.
Jaguar Wong
The 6th Deadly Venom!
Jaguar's Wife (To "Judo" Gene Lebell): "Excuse me, my friend (Tigerstyle) wants to know if we can take a picture of you choking him."
Gene LeBell (in a gravely voice): "If he don't mind, I don't mind."
- actual event from DragonFest 1999