Yes this option is available. Sim it and find out what's best.
As of the patch I swapped my Feral Spirit prime glyph for the Windfury glyph as it simulates out to a slight DPS increase. However, I have reservations about doing so. Does it stand to reason that Blusted Wolves with a Tol'vir potion would cause the Feral Spirit glyph to yield a higher DPS than the WF glyph? Has anyone else tried/thought about this or does EnhSim already include this as part of it's calculation?