The IMRs would definitely rattle, but you could use a battery magazine, such as the one available for the Olight M20 Warrior. Then you could have the best of both worlds, and also use the M30 with an 18650.
Well if you're going to have two options at the business end (P91 and M30W), you might as well have two options at the tail as well; your stock Z41 with Softstart upgrade for incan, and something like a Z59 for the Malkoff, although there's less expensive options.Only problem is not enough voltage to give me 3 levels with the AW switch. But I can live with that.
My Koa body arrived yesterday, and what a fine work of art it is! I have configured it with a bezel and tailcap assembly from a Cabellas 6P clone that was on sale a year or so ago (bundled with a knife), along with a SolarForce type III LED module and an AW protected 18650 cell, and it works fine.
Incidently, for anyone looking for assembly parts, there is a group buy going on in the CPF Marketplace for the SolarForce L2M in varying colors/configurations.
Many thanks again for bringing these bodies!