I don't see a problem with stacking the two. Some of your original post is a little confusing. I have not seen, experienced or read about any libido issues with the use of Symmetry. Is that what you were saying you are trying to counteract or are you going to be in post cycle therapy or something? Outside of that, the two should be a great combo. Keep in mind though that the effects of Symmetry are subtle and it will take about 14 days or so for the effects of the supp to be noticed (just in case you didn't know). With that in mind, you might want to pick another bottle so that you can run it a little longer. This way, you'll gain a better benefit of the nitrogen retention properties, enhanced recovery, and subtle strength gains (to name a few) that the supp provides. I don't know much about JW, but you should be pleased with the Symmetry? Have you thought about trying PowerFULL sometime? You'll love it.
Just my $0.02
Also, what will you be dosing the Symmetry @?