I had been Qwerty typist before I discovered Colemak, so my fingers are hovering over the home row. Fingers are a bit hovering from keys, so that they could type and perform key combinations.
Typing in Colemak makes you feel "tight" since your fingers fly less often, and they mostly rest on the home row. That feeling lasts for 3 weeks, then you will be familiar and even happy with that, since that is the sign of your wrists can relax more.
If you are not a typist, then the switch to Colemak plus touch typing will be very hard on you at the first 3 weeks. You have to train your hand, make fingers stronger as well as building muscle memory for the new layout.
For Qwerty typist, your hands are ready for fast typing but you have to unlearn Qwerty skills and learn new Colemak combos.