Lexsis, my sympathies. I agree with your skipper. Calling alternately "Gee Ess" or "Glideslope" is ridiculous. They sound completely different, and as my SOP says "Glideslope" if an effo said "GS" I'd pull them up. There's millions of ways to fly aeroplanes, and FOs are driven mad by captains doing things differently. In the end it doesn't really matter, but standardise it. Flying's supposed to be fun, not trying to guess what the captain wants or likes to hear. Put it in the SOPs and stick with it. That said, with all the Airbus SOP prescription, surely this is already covered somewhere?