Hi Amanda,
I know your very pro spay\neutering, I just wondered if Cameo's experiences may have made you think twice about spaying Guinea Pig's especially about it being routine surgery, not many owner's can afford to keep there pig at the vet for days at a time. Not to mention the fact some newbie Guinea Pig's owner's aren't capable or don't know how to syringe feed a pig. I only mention this as previously you said your vet is considering advising people pig's should be routinely spayed, IMO this could be detrimental to a female Guinea Pig's well being especially as most new owner's are inexperienced and never dealt with a sick pig before.
Tani - I believe Rugby neuter to guarantee there pigs aren't being bred from, yes it stop's ovarian Cyst's, but generally speaking Cyst's aren't a major problem a lot of them can be left without treatment. I have two Sow's from Rugby, same reason as you didn't want to get my boar done.
Sending huge Healing Wheeks to Cameo - I hope she's much brighter today! X
I don't regret it, as I still believe it's the best option for her long term.
Over 75% of sows between 1 and a half to 5 years old end up with bilateral cystic ovaries, and there's also huge (between 70 and 80%) likelihood of adenocarcinomas later in life. There's also the prevention of things like pyometras and such too. I see it as a gamble either way, either spaying to prevent (with the risks involved), or leaving entire and potentially treating later on, and I decided that the odds were better this way round.
Cameo has had complications with hers, mainly due to the lump that was found and then the urine infection afterwards (whether it was "caused" by the op, or a coincidence, we'll never know!), the recovery time for spayed guinea pigs is normally much quicker. Obviously there's risks involved with any surgery - we recently had a dog in for 2 weeks after a routine spay went wrong, but I agree with what you say about the syringe feeding and such, and this is something I mentioned to them while they were discussing it, as unfortunately, most guinea pigs do tend to be "childrens" pets, and would "normal" people (let's face it, we ain't normal

) put in the amount of care needed?
As for how she's doing, I'm waiting for this mornings update, but I'm thinking of bringing her home today, or maybe taking Jeff in to be with her. Should also hopefully have the results of her lump back today too, so fingers crossed!