IMO, they are for real. I went down there a couple of years ago to receive Rig-pai Sal Wang and the Cho Ying Dzod from Khenchen Paljepa Dorje. As a bonus, I received Khenpo Jig-phung's Two-armed Vajrakilaya. Everything I perceived and received was on the up and up as far as I'm concerned. Lovely, sincere people and authentic lineages. I recently did the accomplishment of the Vajrakilaya sadhana and definitely got some ngo-drub. So for me, the proof is in the pudding. So, if you feel drawn to studying with these people, go for it. I'd love to be at the upcoming Guhygarbha wangs and teachings but I'll be in retreat elsewhere.
Pema Chophel པདྨ་ཆོས་འཕེལ