At my advanced age, looking cool is no longer on my Top 10. It's all about comfort and a bike that is fun to ride. So, my T120 doesn't leave the driveway without a tank bag. I use the Cortech 2.0 magnetic tank bag. Holds glasses, lens and faceshield cleaning kit, a bungee net in case I buy something, a couple of bottles of water, a map or two, a bottle of Purell, a small LED flashlight, a kickstand plate, a small first aid kit, electric jacket liner and wiring harness, and probably some food bars that are past their due date.
The bag stays put during all kinds of wind and cornering conditions, but is easy on and off at gas stops. I never have to consider anything when I go for a ride because it's all there. Just zip up my 'Stich, strap on the skid lid, wiggle into my gloves, slap the tank bag in place and it's off I go. Used now on three different bikes, this bag has not harmed the paint on the tank.
I also have a Chase Harper barrel bag strapped to the grab rail. This contains my tool roll and my chain lube kit (small squeeze bottle of gear oil and a wad of latex gloves). This bag stays on the bike and doesn't look out of place with the T120's style.