If he has white on his face, he has one of the white patterns often all lumped together as overo; tobiano doesn't put white on the face. I can't really tell in these pics, but it looks like his lower face is white, which is often a splash trait.
My stallion has just a star and a wider snip and two hind socks (and just a tiny spot of white on the front coronets), and I was told its likely splash. [Although he doesn't even come close to looking like he could have LWO, I tested him anyway, and he tested negative. Its cheaper to test just the stallion, than 6 mares; so I test the stallion and if negative, no need to test the mares.] One of his colts last year, came up looking much more splash and has blue eyes; the colt's dam is perlino, so I really don't know what markings she might have hiding in all that white (she's not been tested).