WASDv2 should be tenkeyless, w/ HW support for Colemak and custom keycaps (and standard physical layout, so you could easily replace full set).
My another recommendation is TypeMatrix 2030. Sure, it isn't mechanical, but still very good, quieter and thinner than any mechanical keyboard (maybe except some Cherry G84), and with HW Colemak support. My favorite keyboard for traveling. You can get a Colemak skin for it.
Or you could go with a custom keyboard like ErgoDox or GH60.