I'm going to be building a 10 ft long trestle table for a client and I've noticed that a majority of tables i see online have the middle supports going from the middle of the bottom to the top of the legs like this picture.
down trestle.jpg

Why would you not go instead from the bottom of the legs to the middle of the table? Like the picture below? This was one of the few i've seen like this. Would that not give the center of the table more support?

up trestle-table.jpg

Thanks for your help!