I understand all 2u (or bigger) keys are splittable, but which ones are these?
left shift, right shift, backspace, enter, space bar
Is that the complete list? In particular, is caps lock (or control) to the left of the home row splittable?
admin
commented
You have to open up the inner assembly sandwich to switch the layout (add/remove a flipper to split or unsplit a key).
Alex
commented
OK, thanks for the quick response.

(Ugh. WordPress seems to be eating my reply. Sorry if this gets posted umpteen times.)
OK, thanks!
Follow-up question: if I get backspace split and later decide I don’t like it, is it easy to go back to the 2U key? In particular, does it require opening up the inner assembly (screws, bending tabs, removing plate, etc.) or is it simply a matter of popping off some keycaps (possibly removing part of the switch from the top?) and popping on the 2U cap?