Ditto on the Eco weld.
Even though the suede will be cut oversized and later trimmed to match the veg tan, lining up the suede with the veg tan can be a headache because it's so light and plyable.
Once the two pieces touch... they bond and there's no adjusting. So, misalignment and wrinkles are a possibility.
After applying the cement to both pieces, I put wax paper - over the cement, line them up and peel back the wax paper while I stick them together.
I've also used popsicle sticks to keep them from touching while I line things up.