I guess you'll be OK. I frequently travel with large and unusual items of electronic equipment, and Security don't seem at all bothered about it. Occasionally they'll ask what something is, but I've never been made to check in anything that I say is delicate. . .. .Actually last week the X-ray operator gathered all her friends round when scanning my stuff, saying "Oooh - look at this. That's interesting!".. .. .I get a bit more hassle at check-in if I have 3 items of hand baggage. I find that offering to check-in the one non-delicate bag seems to pacify them.