Edit: Then again it appears to work best on Psx/PSOne. With PS2 it looks like you’d still have to still get the flip-lid, as its almost like a swap magic disc. That is, if you don’t mind using a damn slide card.
the breaker pro
you’d still need to do a swap trick on the psx
the classic trick was the toothpick in the opening bay to make the psx think it was still closed.
some shit never changes
I used the PS-X-Change disc, about the same as the Breaker Pro.
It came with a small spring that could easily be set in place, and afterwards made the PSX think it was always closed. A very simple yet effective way to make swapping discs a breeze.