As to using an AG pump on a IG pool, it is possible but it depends on the installation height of the pump relative to the pool water (above or below and by how much) and/or the pump line. However, there are some AG pumps that self prime such as the Pentair Dynamo and Hayward Power Flo II that would work fine with an IG pool. But most AG pumps require a flooded suction.

Also I would not recommend using an Intex type of SWG and pump combo if that is what you are thinking. They are significantly under powered and definitely require a flooded suction.