I don't have personal experience since my MBP has a SSD. Things page fairly quickly. It will affect the total life expectancy of the drive. With the new models of MBP that's a real problem. The drive and it's logic board have to be replaced. This will require me to pay a "Genius" to do that. Ideally I could just pop a few screws and be done.

SSD lifespan concerns are overdone. Tech report took 100TB of constant writing to get a TLC SSD to start showing errors, and you're not likely to do that. However, by avoiding swap, you're in all likelihood causing extra reads, which also degrade performance. I advise saving your worry for other aspects, such as reliability during unexpected power loss.

http://techreport.com/review/25559/the-ssd-endurance-experim...

I'll let it swap (since I can't figure out how to shut of swap). I just do any heavy lifting on my Sager. A nice side effect is that I have to make sure my deployment flow works.