Since I have 2 eyes, I need 2 cameras. To get over the £136 import TAX, and because the store just so conviniently had a bulk listing for them, I'm also planning to get 20 VGA cameras that are £2 each.
For what I need to accomplish for this project, I think SLaM is entirely optional but it could be useful for the dynamic spatial audio feature or being able to have virtual monitor points in space. I will admit that there's a tinge of FOMO because basically any AR HMD has some level of SLaM.
Hopefully, 30FPS is good enough to get something. I couldn't find a video of the GC0307 but I did find one of the very similar GC0308:
I also couldn't find any M5 lenses to use with these, so it sounds like I'd have to manually remove the IR filters in the stock lenses or keep the SLaM to visible light only and revisit the feature if it shows potential.