Mainly due to price, I can't see any need in my arsenal of a 123 powered LUX1 light.
My Lambda does +- 2hr. on Nimh AAs and looks like a stock minim*g.
My two XM3s have good runtime for free (NimH).
And any of them could sit for years with Lith AAs aboard.
Besides, the Inova XO is along similar lines and looks and feels killer.