Hi Jonty
I have the Clearwater 11ft #3, and use the Rio #3 Trout Spey on it (17.2g). I'll typically use it with a 15-20ft mono leader in low water, and either 10ft trout polyleaders or 10ft Scandi versileaders if I want to dig in a bit. For very low/clear water I think a #6wt trout line on a S/H rod would be more stealthy - but the 11ft D/H is a lot of fun. The line I use has a lot of oomph to shift heavier versileaders and big flies, and in tight spots with no D-loop room a static roll cast will easily get you to 60ft. I haven't tried it with a lighter (#2) head, but I think it would probably work.
In terms of handling fish, with low-ish rod angles it's much more about tippet strength than rod strength, and I've had no problems with fish into mid-doubles. I don't mess around playing fish and they're usually in the net in a couple of minutes. FWIW I think I can get fish in quicker with a S/H trout rod.
Another thought: The Rio TS line on a 9ft-er still flies! So a #2 on a 6wt SH trout rod could be brilliant.