While scratching is certainly something to keep in mind, if you're not too concerned about the table being transparent, then you could always get frosted polycarbonate. It'll show up scratches much less.

Or you could get clear polycarbonate and frost it yourself if/when the scratches become too obvious. Just takes some sandpaper and a bit of effort.

Edit: also imo fully transparent tables suck. I always bump into them and always end up slamming my cup into them or trying to place it in the air above it.