It works just fine.  I used a grease for installing the moose inserts on the both parts of the tubliss to seat and seal it instead of the soapy water technique they show in their videos.  I did this because I balance my wheels for street use.  If there is too much liquid sloshing around in your tire, you won't be able to balance it.  If you are running off road you can add tire slime or ride-on sealer to create a run-flat tire.  Also, adding the ride-on or slime to the high pressure inner tube can slow down its pressure loss that occurs over time.

All in all, the system works on the 690 rims.