Hi-Power Hosts, dual-switch, DTR Heatsink compatible

I've been gone from LPF for a while and noticed some host makers and manufacturers are now gone.

I am looking for a production item (non-custom) host, momentary side switch/on-off rear clicky switch, compatible with DTR's larger heatsinks (20mm or 25mm). I am thinking that, with the advent of the high-power 445nm diodes out now, this host should be available somewhere.

Are there any sources for this type of host who make this as an off-the-shelf item on a regular basis? I prefer to avoid getting into commissioning someone to make a custom host at this time (extra work, time, cost, and other possible difficulties).

Thank you for your help.