I know that there are a range of opinions on the idea of cross-training. Most people I meet in person seem to be in favor of it. Personally, I think that my time in other arts has been quite productive. I think it's useful to expose oneself to many different styles/masters. Perhaps others feel differently. Given that there isn't really a defined structure for pressure-testing the techniques we study in the Bujinkan, I tend to go outside the art in order to do so. Here's a clip of me sparring with the instructor at a HEMA group in Portland (until I moved away quite recently, I'd been training with them for a bit over a year): I'm interested to hear what people have to say about the clip specifically and about cross-training in general. Comments, concerns, anecdotes. I'd also love to see clips of other people pressure-testing themselves outside their home turf (whether that home turf is X-kan or some other ninjutsu organization). Thanks, and enjoy!