If you use Glyph of Renewal before the next spell, you will gain the energy, and the spell will still recharge instantly, negating the downside of this spell.
Not exactly a new idea...
But congrats on figuring it out on your own!
cheers
cept u have to wait 10+x sec for glyph of renewal so its not really spamming a high nrg low recharge skill like rodgorts invocation, is glyph of renewal had a 5sec recharge itll be great, but it doesnt.