No...the reaper was a preheresy weapon and when the newer Asscans came out, the loyalists switched to them...
As for commonality in IG...depends on the background and fluff for a particular regiment...some specialize in certain types of combat doctrine so it basically depends on their fighting styles as to what types of heavies their support squads use on a regular basis...like the old mordians had a particular fondness for lascannons and mortar squads in their regiments heavy weapons squads...catachans like heavy bolters and autocannons...cadians like heavy bolters and lascannons...just depends on the regiments particular style of killin stuff....
__________________ I am Wolfpack, my fangs are long, my hair grey with age...I am The Great Wolf...I fight with bolter and Axe, my armies vast, my word final. A true son of Russ, my honor above all, I hunt the heretic, the xenos, and the witch and slay them where they stand! My sons hunt our enemies, slay them where they falter and bring their pelts to Fenris |