A colleague of mine was interested in using Solugard. He did his own trials on his own carpets. Detergent pre-spray (Woolsafe) rinsed with Fibre and fabric, applied Solugard, dry, cure, test Very poor bead up.
Spoke to Solution UK, used M/S and freshwater rinse, apply, dry, cure superb bead up. Cleaned again 5 times over a period. Still beaded up superbly.
DO NOT USE FIBRE AND FABRIC (OR ANY OTHER ACID) RINSE. The Solugard will not take.
As for spraying with Ultimate Master followed by a freshwater rinse, I don't know. I suspect not.
As with all manufacturers, if there are any warranty/performance issues arising, and you didn't follow their instructions, you'd be on your own, so why take the risk?
Safe and happy cleaning

Ken