My desired build is 519a 5700k + 519a 3500k with all the domes on. I would prefer 3000k but that's not an option. Could I email him? Sure, but I probably wont. I would choose to keep the domes on first to see how it looks and dedome them myself later if I still wanted to. Dedoming 519a is hilariously easy.
I don't feel likely to get an M44 and I am a bit puzzled by it. Someone described it as three D4v2's taped together. Why not 3 lights then? The main purpose I see for a large light like that is a long range thrower with a big smooth reflector. But maybe LEP's can displace some of those.
I'm thinking my normal 5700/5700DD mix on the cool channel. And my DW4 is about as warm as I really want to get, so 4500/4500DD on the other. Yeah, it's a narrow range of ramping, but I have a narrow band of CCTs I like looking at. And the combination on 200% will hit right in the middle of that band.
I have so far found two use cases for channel switching that I like. First: tint mixing, like in my LT1. Second: alternating between flood and throw, like in my D2 (3500K 519A and W1).
But I haven't really felt like I wanted tint mixing in a flashlight, and the pattern of LEDs in the M44 don't really lend themselves to throw. It might be different if each channel got two four-led clusters, so you could put different optics on each cluster,
On top of that, I already have a D18, which probably puts out more light than an M44, even with just SST-20s in the D18.
So I just can't come up with an M44 configuration that feel compelling enough for me to want to drop money on it.