I'll stand by the "definitely" based on the rail protruding into the TLR-6's mounting profile. Until I see a TLR-6 mounted to a Glock 48 MOS, I'm convinced that they don't work.
Additionally, the TLR-7SUB is not the same light as a TLR-7. It's specifically designed for these new style of subcompacts - the G43X MOS, G48 MOS, Sig P365XL, and Springfield Hellcat.
This is a new space, I get it. These are new guns, and they need new lights.
Bradley