SRK TIR dropin

Anyone familiar with these?

http://dx.com/p/48-16mm-3-led-reflector-for-cree-emitters-glass-like-plastic-1916

Could this be used as a SRK TIR dropin, focus all that light down to a tighter throw?

It will be hard to get something better than a properly focused 3x SRK reflector. All mine put a pattern on the wall nearly identical size (both center spot & spill) to a smooth reflector XML P60.