My 6x4 bandsaw has/had a vertical table but I always found it to light in using it as it would flex, come loose with harmonics. I have to thank a variety of other 6x4 owners who modified theirs in a similar manner. I used 1/4" plate made it approx 1" larger all round and cut the back corner off to allow it to fit.
Testing on a quick cut had no harmonics and a tight plate which didn't come loose.
The plate cost me $9.00 from Edcon at Revesby.