You can, but it's less likely you'll train in the same manner if you're using strikes and acknowledging the non-aiki versions of the techniques. You can't practice the latter if you only have a compliant uke - to practice them well, you need someone who is actually trying to stop you. And folks who have advanced experience in another art (and training style) will usually put each other to the test more often, by their nature. They can fall into a mutual-admiration loop and get into bad habits, but it's unlikely since at least some of them are likely to want to see how the new stuff works against their old stuff. And the attacks would almost certainly be better.Yeah but you can still fall into the same traps if you train in the same manner.