I would say that these speakers offer slight differences in sound, that one could say they favor over another, in different respects. I wouldn't say you were necessarily "upgrading" going this route. But would depend on musical tastes, listening lifestyles, preferences, etc.
What exactly are you listening to, how loud, do you move around when you listen (or sit anchored in one spot), etc? Also, what is your room layout and acoustics like?
I guess what I'm asking myself is what are you trying to upgrade in the "sound"? What do you feel is lacking with your 10T's, and what do you hope to get out of the Hales/Thiels?
Depending on your WANTS, and what you think you might be getting, you may or may not be going down the right track of thinking. So please clarify your experiences thus far, your tastes, music listening habits, yada, yada.
Also, can't speak for the Hales, but the Thiels, I found favored a good solid state amp with a tube preamp, from my experiences. So don't know if that helps. however, whatever you do, I'd change one variable. So if you want to do speakers, just do that, and not change your components right way. If you plan on keeping components relatively unchanged, then yes, you need to match speakers that will tonally compliment your gear also.