I would say spin&go is closest of hyper HUSNG. There is no ICM concerns (winner takes all) so having no earlier sng or mtt experience is not problem. For cash game player its probably actually easier as there is no need to "throw away" ICM thinking. With 25bb there is still room for play outside of shove or fold and most of time making open shove that deep is unoptimal play. I would guess how to play with small stacks can be somewhat problematic for someone coming from cach games. When to go for minraise, open shove or open limp. When to defend by flatting or 3betting. I think Aarnimetsa can give lot of help to these for spin&go as he did play only these for decently long period. One of surprising side for cash player (or anyone else) might also be variance of this format. From my knowledge point I would have hard time to recommend changing to spin&go. Not easy format to play professionally.