I'm using psvsd, sd2vita and vita memory (3 different memory sticks) all at the same time on Vita 1000 (3.65 enso) and I didn't notice any issues. Could you please explain what do you mean by "power issues"? Or even better just link to a place where you read about them since your posts tend to be confusing.
I no longer use Official 3.68 Firmware with H-encore Hack run from the Official Memory, IMCunlock fixed those issue, I also now use "Gamesd1.2" not 1.3 or 1.4, for the sd2vita adapter with micro sd:
3.68 I just use "Gamesd1.2" now, with "IMCunlock"
Gamesd1.3 - Added appmgr patch to allow memory card remount
Gamesd1.4 Fix sporadic wakeup issue
https://github.com/xyzz/gamecard-microsd/releases
On Firmware 3.68 specifically with h-encore, you have to CLICK UNLOCK, bubble. The above fixes will ensure the window closes automatically after selecting the option to run h-encore from that UNLOCK bubble. The window will not close automatically without shrinking/enlarging the window with the PS button,
with "Gamesd1.2" (those higher versions, 1.3/1.4, ended up addressing h-encore only).
This issue with "Gamesd 1.2" is not present on lower firmwares, which was adjust for fimrware 3.68 after "Gamesd 1.2" was fixed for 3.68 firmware...............this software "Gamesd 1.2" is not the problem, its a combination of things, tied to the requirement of an "official memory card for the hack in order to use the sd2vita".
now at present, the problem is resolved with IMCunlock, and other issues, power related, vita games closing with errors unexpectedly or restarts of the vita, associated with 3.68 h-encore run from the "official memory card" .................. I don't have this specific combination, but I don't believe the problem was isolated to the "gamesd" plugin, versus the "storagemanager" plugin, that came into existence around the jump in versions from "gamesd 1.2 .... to 1.3 then 1.4" .................... but I can't verify that, I can only say since using IMCunlock and specifically going back to version "gamesd1.2" for sd2vita adaptor, the problems and power issues are fixed, thanks to IMCunlock!
(that official memory card usage specifically, was the problem, the rest of this stuff is only evidence of the issues on 3.68 firmware only with all these problems because of that ......................... the flow as talked about a firmware downgrader, its not difficult to uninstall IMCunlock, but before, and if that happens, its urgency to use IMCunlock, and remove the risk of a damaged vita)