I love it, too. I hate that Lenovo no longer makes a ThinkPad with only that style pointer any longer. I always felt the trackpad was a big waste of space since I never use them.
Eh, as a T440s owner (granted, my first Thinkpad) I was a bit apprehensive about the lack of buttons but I actually exclusively use the Trackpoint now. The clickpad does click down like a button which is a little weird at first but you quickly get used to where the "buttons" are and then it just feels like normal. I use the middle click scroll a lot too. At least in Linux you can adjust the precise locations of the buttons yourself, I think in Windows you also get some options for configuring the button locations if the defaults don't feel right. Right now I feel like this is the best input system I've had on a laptop.
You'll be disappointed in X240. The buttons for trackpoint are removed in X240. Instead, they made the trackpad clickable. It's a miserable experience. It is simply impossible to use trackpoint with trackpad enabled because you inevitably slide finger over trackpad to register a click. That moves the cursor. Disabling trackpad made trackpoint somewhat usable but clicking the whole trackpad is much harder than just a button.