looks just like regular swollen calyxes to me. i don't see bananas, so i doubt it is a hermie..
remember that the calyxes, where the pistils grow out swell up with resin buildup if they're not pollinated..
this can look like a pollensac to someone that doesn't know it better.. if they have any hint of the pistils (or full grown pistils coming out of them), they're definitely no pollen-sacs but just fat calyxes..