I've owned a 350z and G35 Coupe with summer tires and endured 4 winters with those cars, and they are just as bad, if not worse than the 135 in the snow. In any condition except packed ice, any set of summer tires have acceptable grip as long as you're not going crazy. The key here is to use common sense given the conditions and drive accordingly. Granted, in the NY Metro area, we get MAYBE 2-3 bad snowstorms a year, and the city is very good about getting salt on the ground so the conditions are drivable. The worst part is digging your car out, but once you do that, it's no problem. Any packed snow deeper than 1 inch though, you can forget about it. Wait until it melts or the road gets salted before you take any RWD car with summer tires out.
FYI, after I dug my 135 out this morning, it was smooth sailing on the Hutchinson and then the Sprain (Hutch has the best twisties for a NY metro highway, and the Sprain has the the best open roads).