I have a Meiser Highlander Classic 11' 4/5 and love it. I fish the Deschutes regularly with it, swinging soft hackles, sculpins and it's my go to rod for the Salmon fly hatch. And yes, you can nymph like no ones business if you want. The Deschutes 12-20 inch trout are fun on this rod. I also use this rod on the Williamson and have landed 8# rainbows, but you don't have to deal with much current.
I also did the steelhead conversation which is a 13'9" 5/6 and I use it on the Deschutes for steelhead. It's a lovely dry line rod.
If you stick to the script, and what people say you can and can't do with a particular rod you will find limitations. If you go on your own and use your creativity, there are no limitations.
Meiser rods are wonderful fishing tools. Enjoy.