Those bulbs are 100/90W ones, so may run a bit hot around town. I haven't used them in the ST11, but in a single headlight they did run noticeably hotter, so I kept them for highway riding. 100/55 was a good compromise for town/highway, and 130/90 even better for highway. Someone may have actually used them in the ST11, but I suspect that they would run rather hot with the twin bulbs on, so reflector life may be compromised. I would be glad to to shown to be wrong, as they would make a cheap lighting upgrade.
The life of those higher wattage bulbs is also shorter, as I had many go in the low beam, but that was on a headlight that took a few minutes to change the bulb.