Pick up a true Spey rod. You won't single hand a switch, or you will rarely.Plus as you progress in DH casting you will want a dedicated spey rod to maximize all the tips you can use and cover a lot more water area and search the water column.
I high stick a ton of water with my DH you can mend forever it seems like.
Also after using a DH for a while you will incorporate it into your single hand casting more.