You should definitely try before you buy. Every company are little different in size and they are also different in way they fit. One companys 10 may 10.5 in other company's and one may have wider toe box, narrow heel, narrow overall, wide overall, different stiffness....... Boots are the most important thing out of the equipment especially when you start out. You can have best board and binding, but unless you have the good fitting boots they are wasted.
Dont worry about how they look or what brand it is just get the one that has the best fit and stiffness.