How would a small liberal arts college view a PhD from Germany or the UK? Factors other than teaching ops?
It's hard to get a job teaching in America unless you do the degree in America. This is because so much of getting an academic job, especially at a small teaching college is going to depend upon personal connections. 

Think about it from their point of view. The hiring committee wants somebody who is a good scholar, a good teacher, and a good citizen of the department (in some order, which factors are more important differ from school to school). It's really hard to evaluate somebody in depth along all three of those axes. It's even harder when you have a pile of three or four hundred applications for one job. So you use shortcuts.

One quick shortcut is no Ph.D. in hand, or a Ph.D. from a place that has a bad reputation. That cuts your pile to 200 or so applications. Then you look and see who doesn't have any good publications or presentations. Now you're down to 100 or so candidates, all of whom are very strong, but you're only going to be able to interview about 20 or so. So the next thing you look at is letters of recommendation. The way you get from that pile of 100 to the pile of 20 is by having letters of recommendation from people that members of the search committee have heard of. There's a chance that they've heard of your famous german mentor, but there's an even better chance that they haven't. Take two scholars X and Y of equal ability, but where X is an American and Y is a German. Let X and Y have equally good publication records and so on, it's still far more likely that the search committee has heard of X than that they've heard of Y, because they've got to conferences with X and heard X's papers and been impressed by him over drinks, etc. This matters hugely in terms of getting hired in the ultra competitive world of academic hiring, and so doing a degree abroad is always going to handicap you.

The only exception I can think of are Oxford and Cambridge. American scholars tend to know the names of those folks, and those two universities have such a strong reputation that you might not get penalized in this way having the degree from them. Everywhere else is a danger zone.