Just home from my Rawhyde trip through Mojave and Death Vally. Wow, what a difference the Ohlins made to the bike. Lots of rough terrian and sandy woops on the route. The suspension handled it like being on a cloud. Lots of compliance, but never felt any harshness. I did find it a bit floaty feeling on the asphalt, so may need to dial in a little more rebound dampening on the rear.
FYI, I'm 48 and am also not as young and fit as many F800GS riders here, but the upgrades still were well worth the cost for me. The bike is just so much better now than with the stock setup.