Sometimes I take it on top of a scoop of preworkout, hell yeah. I usually take it on days were I've already drank a lot of caffeine, or am working out/running later in the day. In terms of pump it's comparable to the full preworkout but without the caffeine so if you like that product you'll like this one.
Orange creamsicle tastes great too.
Oh worth mentioning, I've taken pump products from a local supp shop and that one without fail forced me to use the bathroom. This one is effective AND friendly on my stomach. So yeah unlike the gamble of the ol' local supp shop these products are reliably effective and good.