When testing a lube, I usually squirt some on my hand first to get a feel for it, and to make sure it doesn't contain some toxic element. I don't like watery lubricants because they always leave a messy stain on the bed sheets. The gel was not watery at all and warmed up immediately when I rubbed my hands together.
Next I test the smell and taste of the product even if it is not a flavored lube. It should go without saying that I don't want anything odorous on or in my body. Also, while I may not anticipate getting the stuff in my mouth, during sex stranger things have happened and I don't want a product that makes me gag if I get it on my tongue. I didn't really notice any particular scent, but it did have a hint of cinnamon.
The true challenge comes when I test drive the product with Soccer Dad. The lube worked perfectly for a good old fashion hand-job. Soccer Dad always enjoys the extra attention lube testing brings! The better the product works, the quicker he wants to move from the hand-job to sex. The lube aided in making this a smooth transition. The Wet Warming made my pretty pink parts feel just warm enough to enhance clitoral stimulation without feeling like we were about to spark a fire with our genitals.
In the end WET Warming did a fine job keeping our sexual machinery lubricated and tingling at a nice temperature, which is about all you can really ask of a lube!