They'll be fine. About 95% of it just comes down to what you're used to, and how you adapt your personal technique to the tools at hand. My habits were first built around using pocket-sized hones (usually ~5" or smaller), and I've even sharpened kitchen knives with my DMT 'credit card' hones as well (I actually use those more than any others, in fact). A 6" or larger bench hone is a very useful luxury, but not essential. They're more useful for some real heavy grinding, when a lot of metal needs to come off the blade, especially with more wear-resistant steels (which aren't usually found in typical kitchen knives, fortunately).
Larger blades can be swept diagonally across smaller hones, by orienting the blade's length between the corners and drawing the blade corner-to-corner. Very small hones can be scrubbed lengthwise along the blade's edge (I actually find it easier to maintain a steady angle this way), or the lengthy edge can be worked in smaller sections at a time.
David