From what I know different chemicals in as well as viscosity of a lube can MILDLY effect the movement of sperm into the cervical os. (The opening of the womb.) Some chemicals (and I'm stumped on which ones right now) can effect mobility, even if there are no spermicides in the lube, so even if they MAKE IT to the cervical opening, they might not have the stamina once they get there to go all the way and penetrate the egg.
I need to stress, though, that this particular product is made by a company that makes some strange comments and you can tell from their terminology they may not be in favor of Choice. For instance, NO lube "harms embryos" like they claim, (ridiculous claim, really) and their website is FULL of testimonials, and not a LOT of real medical evidence. Lots of testimonials for a product may be anathema to actual evidence based medical research.(although they developers seem to work in the Bull Sperm Insemination Program a lot) They SAY the product is "conception friendly" (mostly based on animal studies, in vito studies (meaning "under glass" or in petri dishes) and from testimonials.)
That being said, I don't think it could hurt, but realize you MAY be supporting an anti-choice company by purchasing this product (although they don't say what they did with the products of conception in the in vitro studies, but I am thinking these studies on the sugars in this product were done by others, I could be wrong, though.) Your mileage and all that.
I'm sure you know other conception friendly ideas, like the Man wearing loose boxers, no hot baths, eating healthy, no alcohol, tobacco or weed for either of you etc.
However, many of us have gotten pregnant quite easily while using water based lubes, but if you want to hedge your bets, be as careful as possible. Remember, though that ANY lube can act as a slight barrier, I'm betting even Pre-Seed can SLIGHTLY effect movement of sperm, so if you don't NEED the lube, you may want to go freestyle (NO lube) during her fertile times and let those little swimmer swim unhindered all the way home!