I hear Piper Tri Pacers are like ME-109's.... Easy to flip on landing due to the tight landing gear. Be careful in it.
Pish and tosh (assuming you mean Pacers, not Tri-Pacers). I've heard the same about Luscombes and old Cessnas, and I doubt it, based on other testimonies and my own experience with old Cessnas (C-140), Cubs, and Champs (although Champs are very easy for tailwheel newbies).
I think anyone who's ground-looped such a plane or put it on its nose when rolling out or taxiing, and blames the landing gear geometry, is not being honest about what really went wrong.
Never flown a Pacer, but I hear that like C-140s and Luscombes, being a classic TW airplane, they have a tendency to do exactly what you tell 'em to do when taxiing- immediately. Not really a bad trait, but something you must adjust for if most of your time is with nosewheels. It's very do-able... if I can do it, I think anybody can.
You will understand if and when you do that TW add-on, regardless of what type it's done in. With practice, the tail-wagginess becomes an asset during ground ops.
Just remember that the CG is aft of the mains; brakes are (usually)for stopping, not for slowing down or steering; you should always park it pointing into the wind unless you're tying it down; and in general fly it until you switch off the mags and get out, and you will do fine with any old taildragger.
