a good shooter almost never changes choke tubes. SK/IC work on any presentation, even long ones. Do not over-think, relax and shoot. Your scores will increase...
SK/IC may work on the skeet field, and for about 50% of the sporting clays targets, but I shot Sunday where three stations were M and IM and four others were LM and M - not because they were necessarily that far away, but a few were edge-on and you want to keep your pattern as tight as possible for those