I personally would never carry a rifle on the Capital grounds, let alone inside the building.
I don't like the image created and given enough time (1 year, 10 years, 100+ years) some idiot will discharge one, accidently or not and enable our enemies to pass bills that have nothing to do with the Capital grounds.
I wear casual business attire when attending protests, I think our interests would be better served if I wore a suit and tie. Growing up in the 60's I remember the civil rights protestors being attacked by dogs and beaten by police while wearing suits and ties. I feel their choice in clothing made the general public more receptive and supporting to their cause. We take much of what they fought for by granted nowadays, nothing was granted then.
Image is important. If you can't see that freedom's enemies are using this against us, I don't know what to say.