marmadukeGRYLLShildreth serious question: in what way will you have to adjust your play at all? I mean aside from having to position yourself smarter because you cant 2 shot a scout with stickies at your feet anymore.
In Yurope we play a more Demo-centric style, it changes how you approach the game as you do less damage per second meaning if you try the same things as before, less damage = less success. It isn't rocket science really. A lot of smaller things will change, small things you work into your game over years of playing, so some of those things like how you would fight a scout with good movement change because the scout won't take 110 damage from your close range sticky, he'll take say 50-60 so he can confidently run at you and take the damage to land the meatshot...that's a specific example but there will be a few changes.
As for HL Demoman, even more stuff changes. Can adjust, that is what will make a good player but you know...takes time.