I have my original one still, I absolutely loved it. I could never afford a DSTWO when I was younger, but I did grab one of those DSTWO clones that appeared on AliExpress a year or so ago.
So far, I cannot seem to achieve this. If I run GW mode on my SysNAND, it wipes boot9strap. I do recommend having EmuNAND though for this purpose, meaning you don't have to screw up anything.
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi