Sounds like you are very happy with the Roadini so far. That's great. It doesn't really surprise me that it climbs well. This modern notion that super short chainstays are required is just not true IME. My 70s Masi always climbed great too, and it's fairly similar in geometry to Roadini, minus the sloping top tube of course...
Thanks for mentioning Green Grips tape. Never heard of it till now. I've been pretty happy with Newbaums recently. I wonder what qualities make you prefer in the GG tape?
I was thinking of going back to cotton on my Mercian Auda, but I find I prefer padded tape these days. I guess I'm getting old. Plus I don't really like feeling the cables under the tape. And I dislike padded gloves. For non aero set ups, cotton is fine.