Being a veteran of that commute for many many many years it honestly varies. You need to break the commute up into two parts, getting in and out of Scripps is part A. You gut it out through Pomerado or you go for Spring Canyon.
Alternatives to Pomerado exist on some of the smaller surface streets as well.
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Then you have the choice of Mira Mesa or Miramar Road, or going through smaller streets of Mira Mesa, or go the long way around 56.
To be honest 56 never really pans out well. I found using the smaller residential streets through Mira Mesa actually are your best bet. Sometimes Miramar Road was a decent alternative and yielded decent results.
I found it worth the commute because I enjoy Scripps.
