I think for me it's not so much the packer that makes me feel silly but the harness itself no matter what form it comes in. Yeah, I know there are packers that are now built into underwear or you can build them into your own underwear/rejigging your underwear yourself to accommodate the packer without the harness and other methods of keeping it in place without a harness...but that just feels completely unnatural/silly for me. Part of being who I am as a guy is the sense of freedom I feel to be a guy...not needing any extra material things to add on. It already feels horrible to have a binder, but that much is pretty much necessary. Packing just makes me feel really artificially. Oddly enough, using a medicine spoon as an STP doesn't feel as unnatural to me as walking around with a packer.
The only packer I'd be willing to overcome that "silly/awkward" feeling for is the peacock, lol. Still saving up for that. The fact that it's 3 in one makes me think it will feel a bit less awkward for me. We'll see.