Really, when I say "ugly" I mean it in almost praise-worthy way. It's obviously highly functional and it works great.
For over a decade I made furniture and stuff (not basses, not yet) on work surfaces placed on horses and -- yes -- a WorkMate. Ugly as sin. It was pretty useful, though, to have alternate work surfaces depending on the job -- flat ones, soft ones, jigged-up ones, ones that I could hack up. Now I'm pretty darned happy with my current bench -- a sort of modern take on a traditional cabinet-making bench. I have to admit, though, that it's not the greatest for working on basses. Your bench, mojo, in its functionality reminds me of that guitar-working stand that Dan Erlewine hawks in the Stewart-Macdonald catalog -- solidly holds the instrument the way you want it and lets you move all around it.
But I still say it ain't pretty!