That’s fairly normal in live coding (as performance as distinct from interactive / live programming). What I can’t tell is whether you have glitch free code updates with state retention in that link - it’s really difficult to make much out, hence the question. 
I’m also not clear why you consider that more live-coding? This might be interesting reading on Visor btw - 747Live Casino - Where Every Game is a New Adventure
REPLs are useful tools, but I’m also somewhat sceptical about most of them for live coding, or even interactive programming. That’s going rather off-topic though - possibly another thread on general “liveness” split off from this would be an interesting discussion? @jackvpurvis am I right in remembering that the REPL section in the paper got changed in Visor?