I remember purchasing my Canon 100mm F2.8L Macro with Hybrid IS specifically because of the added image stabilization with one of the best close focus lenses. Lately though, I don't find myself using it very much as i've strayed away from Full Frame Canon DSLRs and have been using cameras with Super 35 or APS-C sensors (or even smaller). That 100mm F/2.8L lens with an added crop is often just too much.
This new Canon EF-S 35mm F/2.8 Macro IS STM Lens (56mm equiv) though could be a nice lightweight lens to use with my Ursa Mini. A lens that can focus up close, and still offer a decent portrait look. The big stand out feature of the new Canon 35mm F/2.8 EF-S Macro though is the built in LED lights. Very clever!