Another geography teacher here. Clearly biased. But I did both at GCSE and was very tempted by history at A Level. My spec was a modern history one and it was brilliant.
Geog degrees are really flexible - I have many geog graduate friends who have made their fortune in the city (oh why oh why didn't I do that??), others work in development, others are in publishing, town planning, law, accountancy etc.
I think the advantages of geog at any level are that it is unique in combining high levels of literacy with good levels of numeracy ie you have to be able to look at a table of stats (e.g one showing river velocities and cross sectional areas or one showing development data) and make judgments, backed up by facts. No other subject does that.
And that's what makes goegraphers so employable - transferrable skills galore.
Off my soap box now to cook tea...(currently SAHM, wasn't considering going back to work anytime soon until now....! sniffs wistfully...)