Holding ER collets for setup/torquing?

Most shops make an aluminum holder for holding the spindle taper for the machines, BT 30/40, Cat 30/40/50 attached to a bench, drop holder in, tighten collet and go.
Like so but much less elaborate

http://www.ymttooling.co.uk/294-thickbox_default/bt40-deluxe-tightening-fixture-.jpg


Yes a holder for that kind of collet is available. I have used one when I used a HAAS VF2 at a maker space. I checked all over and there is no holder for the type of ER collet in my photos above. Since I knew of that type of holder I went looking for one that does same for the other type.

Do most people leave the collet holder in the machine and just put a wrench on to hold it while changing collets?
 
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