There's some discounted stock in the UK and I really like the profile. Why wouldn't be wise to use concurrently - I thought both would really help recomp.
strategically -- x-gels typically used more in bulk/gaining phases than a cut phase, which of course EpiV is best suited for
i'm not saying it wouldn't be a decent stack, or unwise per se and cannot be done..simply pointing out a thought
personally, I can use almost any supplement for any purpose I want - but, some are definitely more conducive to certain protocols & goals than others
for the record, best results with EpiV will be when you are already leaned up, and are pushing for extreme leaning in a very dedicated phase of diet/training