Eventually, this might be seen as non-suspicious. Maybe. I hope so. It's quite prudent.

BUT for now it's also something only a very, very small percentage of the population would consider doing and then actually do. Border agents would know this, empirically. So if you're doing something that's highly unusual for the general population then you are, unfortunately, doing something weird and suspicious.

TL;DR: it doesn't matter that it's reasonable; it's still fringe and, sadly therefore, suspicious