Definitely. Excellent training grounds to send new players, who might normally sit at the end of the bench or behind it, to get some playing experience and time to learn the Spurs defensive/offensive schema or any player who is rehabing an injury to slowly get back their legs, ie., Kawhi Leonard of late. Baynes will be able to get his playing legs back, plus fine tune his skills against good competition and stay active rather than sit the bench for long periods of time. Since he's under contract and if his first game (technically 2nd game) stats are, he'll be back for the playoff run, no doubt about it.
You can't be late until you show up.