I didnt realy fancy the idea of having to buy multiple probes for multiple toolheads so i added a railmount to the side of the Quicktool change base of PropperPrinting and mounted my BLTouch to it.
This way its permanent, can be disabled via software, is flexible and the type of probe (if someone makes mounts for other probes).
Rail is on the right side, since on the left u usualy have endstops etc. if you want it on the other side, simply mirror the model.
Mount needs to be screwed on and is height adjustable to some degree.
if you need your BLtouch further down, just flip the mount ( physically ;) )
I included a "blank rail" (step file) so you can add your own custom probe mount.
feel free to extend this.
added version2 (v2) which has a longer rail, screwhole more in the middle and a drop in slot for the nut so it cant pop out accidently. this should also make modifing the height of the probe easier