Hi Bill
are you totally sure that this Jack windows version is working same way as Linix/Mac??
Do you have try to testing and see IF you really are able to run up more than 2 ASIO host istance?
IF really this was working, believe me that Openlab$ will bealready used...but still they have the same windows issue, ONE asio host at once...

Anyway..all is possible, I dont have time for make this Windows test, I dont care at all.
I just waiting that someone can shown this Jack windows features.
what I wil to see running in realtime:
1) Reaper
2) ableton Live
3) Forte

let me see