High Impact PolyStyrene (HIPS) is a frequently used filament in 3D printing. It has been touted to have simular properties when printed to ABS and is especially useful for support structures (if the user has a multi-nozzle 3d Printer) as it is soluble in Limonene.
General Purpose PolyStyrene (GPPS) is frequently used in disposible cups, cutlery, etc. I don't believe I have seen it as a 3D printing filament. This is not styrofoam for the purpose of this question despite the identical chemical properties as the incorperated air makes it difficult to recycle.
Would filament produced from GPPS, be usable on most FFF 3D printers that are capable of using ABS, PLA, and HIPS? Are that any particular issues observed with such filaments that would not be observed with HIPS (besides the implied decrease in impact resistance)?
Note: For the purpose of this question, I am assuming that the filament can be produced and am concerned about whether the filament would be usable for support structures and infill.