I just bought the Showers Pass Transit Pants. First ride this morning, 60 degrees, rain from zero to steady. Wore my usual summer shorts and kneewarmers under.9 miles into Portland, hung with friends, did the farmers market and rode home wearing them the whole time.
I dressed as a compromise to be comfortable off the bike and was a little warm riding. But I was impressed. This waterproof, breathable fabrics is a game changer. And being Showers Pass, probably pretty darn durable. (I've had very good experiences with their jackets.) Fully rideable. I did use clip-on suspenders; the same ones I use year 'round (with shorts, not bibs). Details like pant cuffs, the seat ... like these pants were designed by folk who were planning to ride them all winter. Neat feature - the zip up cuffs come nearly to the knee and the zipper is place in front of the velcro to remove the baginess. So, indoors, you can unzip them entirely to cool off without needed to anything more than re-zip to ride, knowing the cuffs will never see your chainring or chain.
I bought these to both ride and walk in as I plan to do both all winter. They are going to get a lot of use based on what I saw today.