The old Time Steel buttons have bevelled edges.
The new Time 2 buttons do not have this bevel and are much more “grabby” which feels unpleasant (at least to me). Even though they are rounded in one direction, they feel as though they have sharp edges (because they do, in another axis).
Judging from an image of the Round 2, its buttons do have a bevel.
Consider having the bevel in future revisions of Time 2 also.