I agree it does suck not getting guild support when you aren't in the city that supports it. I do Armorer and Goldsmithing. I spend most of my time in Ul'dah and can't afford the Anima to get to Limsa if I need 60 mins of Armorer support. On most things I don't have an issue completing a synth without the "required" support. But on things that I can actually get good SP on, it makes a huge difference on success. My most recent example is that I wanted to make some Iron Nugget with Blacksmith, so I could make Iron Square for Armorer. The Nuggets take Guild Support to improve success.

I can understand why the option isn't there. Why would a camp have the same Equipment as a Guild? If you want that kind of support you gotta go to the source. At least we can get Common Support from anywhere. Honestly, if it's not believable I'd rather not have it. There really shouldn't be the option to get Guild or Master support from anywhere other than the Guilds. Thank you SE for not spoon feeding us.