Seam Grip on eVent jacket shoulders (exterior) to resist backpack abrasion?

I would never wear something like that day to day, it's too light and flimsy. My daily wear stuff is all very heavy duty, and lasts decades, not years.

Cheap rain gear is strong and durable, and easily worth the cost, since it's cheap. Big baggy non breathable rain jackets don't need to be breathable since they have air flow, I've never ever had issues with sweat in non breathable rain gear, and I use a bike daily for all transport.

I also use a daypack or messenger bag, that's why I'd never consider using anything expensive as a daily rain jacket. People in Portland, OR, for example, can generally be spotted as natives by their lack of raingear most days except when truly heavy rain hits.

LandsEnd makes great stuff that is well priced, if you want to higher end heavy duty but cheap.

If however you want to use up your event jacket in daily wear, I'd sew on breathable nylon, ie, non coated, patches to the shoulder area. You see this method used a lot by outdoor gear makers, that's what the black patches on the shoulders and elbow areas are for. Breathable so the gap that will hold water will dry between uses.

Yeah, I was lucky and bought it new for only $50 at REI, It had been stashed in the back or somebody had returned it unworn after a couple years so I got it dirt cheap. However, I do want it to last for several years. I've been meaning to buy a daily commuter. Soggy seattle and all.

The question was whether he could apply seam grip to the jacket, not whether you think it's the right jacket to wear for commuting.

I seam sealed some MLD mitts and put a good coating on the palms to help with wear and tear, and while it did prevent excessive wear, the silicone did start to peel off fairly quickly. I may not have cleaned the surface sufficiently from grease and oil to start with, but it's easy enough to re-apply. I wouldn't worry about any loss of breathability. If you are routinely wearing a pack, it's a moot point anyway.

Thanks for the info. Peeling was what I was worried about. I'll probably just put some tenacious tape patches on the shoulder in thin strips, so I don't block off the whole section and also buy a daily use jacket so I can save the eVent for outdoor adventures (i'd still probably be carrying some sort of pack).