[@dragonmancer]

The other summoning methods can definitely be used by those outside their houses, as in there's no one stopping you from using them. The only problem of course would be mastery of the summoning method as well as importance in your deck. If your deck uses Instant Fusion to bring out Rare Fish, that doesn't automatically mean you're in the fusion house, especially if you're just using it to get out a rank 4. Likewise, a rank 4 toolbox doesn't necessarily mean you're in the Utopia House especially if the focus of your deck isn't Xyz. Which I guess was an error of judgement of mine's when I first looked at Fuubi's deck- though he's not really going into anything else- so I guess it's okay.

[@Thecrash20]

Actually has multiple summoning methods, though the real reason I'm pinging him is because he hasn't posted much IC or OOC for that matter.