First impression: It's nice, I really like the new switch that Sofirn used here. It's like the large switch from Wurkkos, just smaller and far better than the hard, wobbly switch they used in the past.
The tint is mediocre and the Fresnel lens creates some rings. Unfortunately also some tint variation from spot to spill. Overall pretty soft beam, but not too floody.
It appears like the bezel is press fit, but it has a small gap and it might be possible to open it.
Interesting place to attach the clip. There's this large groove at the front. Looks little weird without a clip, though.
A magnet is included as well, but it can only be used when no lanyard is attached (D'oh!).
I will write a full review, but it will take some weeks because I have quite a lot other flashlights in the queue.
Thank you very much for the information. I've been using a Zebralight H600Fc as my primary headlamp for a few years now. It's a great headlamp, but it's 18650 and I've been looking to downsize for backpacking. I took the RovyVon on one trip and just used the hat clip as a headlamp. It worked, but I was worried about the capacity the whole trip and tried to minimize my use. These lights you mentioned seem like very good alternatives. I also want a better flashlight for my truck than the Costco Duracell light I have now. It works well, but it's nothing special.
I think if you like the H600Fc it's pretty likely you'll like the H150.
Oop! I've been looking at flashlights since your original comment and didn't see this. I just picked up two Wuben. I replied to your last comment just now with more details. Cheers!