Here's two tubes mounted on a 650 Givi rack. You have to wiggle the lids a little to get them out, ant the lower one barely rubs the chainguard under full suspension compression, but not enough to push the guard into the chain.
2010 Triumph Bonneville T100 84k
2014 Harley-Davidson FXDB Street Bob 15K
The thing is Bob, it's not that I'm lazy, it's that I just don't care.