As ever, FCOM, pro-nor-sop will have the Airbus / Your company definitive answer, but...
“Gee-Ess”, “Glide” and “Glideslope” are all things I’ve said in the past, and will probably say again in the future. Never been picked up on it (who has the energy to get worked up about it, really?)
The important thing (as per Airbus golden rules) is to know and understand the FMA.