The sketch sequencer is a “Micro-tonal” sequencer, but it can be used as a traditional piano roll, you can quantize note values by pressing the keys first before you draw in the note length, use the grid (Shift + White knob) to assist with timing.
…Just figured this out about 5mins ago, thought it may help clear up some confusion/mystery.
Good tip, I had forgotten this 
Several of us might have found this out recently in Battle 76! 
Did someone mention using this technique in one of their compositions?
Indeed
Not really, I recognized the roll within the battle again…
I get the feeling we are not talking about the same thing here.
This is what I mean by “Piano Roll”:
What did you mean to say?
Sorry, I was talking about the last op1 battle here…
I’ve seen the piano roll with holding shift, but haven’t used it together with holding a key…
Thanks again for the tips!