@Jake Lo, thanks for the interest. This kext is based on VoodooPS2, which had support for ALPS touchpad already. I haven't coded it. Therefore there should be no difference in your case for this kext and original https://github.com/acidanthera/VoodooPS2.
Sadly the ALPS touchpad integration, doesn't emulate Magic Touchpad, therefore it doesn't support native macOS gestures, native scrolling and so on.
It should be possible to add magic touchpad emulation for ALPS, but it is hard if the programmer doesn't have such touchpad, I am sorry but most likely I won't be able to h