Hi guys, new poster, theoretical question

Hey guys, ive been a lurker for awhile, this is my first post.

My question is regarding variance. Lets say for instance a solid STT player who is not familiar with bankroll management deposits 200 into an online poker site and decides that is plenty of money to play $20 stts. He starts off on an absolute heater and wins enough to build a proper bankroll for playing 20 stts. Can this player expect to continue to profit even after variance hits or will variance hit him so hard that he will no longer have the required roll for 20 stts, teaching him a valuable lesson?

Thanks for the replies guys. I am still getting used to putting my thoughts into words (very difficult for me) so excuse any flaws in my post. Thanks!