First of all it is true that it might save you some money, but it is freakishly difficult getting spells in the first place. Yes you can buy a scroll to do so but already 2nd level scrolls cost 150gp 3rd 375. compare that to the 10gp 20 30gp scribing cost it is miniscule. Second I get soo much cash anyway.
PFS is not overly generous on cash, so there is really never enough to go around. That being said, getting access to spells is relatively easy: scrolls or spellbooks (rarer) in game, fellow player characters, or at the grand lodge. The first two do not have any access costs, and the last is at half the scribing cost. But I do see spending a bit to get my spell book running "thick".
I really do not see arcane casters using the eclectic and out-of-combat utility spells ... maybe this is for good reason. But I do want to have a go at it.