Hi and welcome
Hi!
It is great that you are considering rescue! Unfortunately, Scotland is a desert when it comes to good guinea pig rescues!
Please consider the SSPCA boys! The RSPCA/SSPCA have rules and adhere to a certain standard of care, so you will only rehome fully quarantined, healthy and properly sexed boars and won't have any nasty surprises re. ringworm or mis-sexing/pet shop pregnancy, like we have been seeing increasingly in pet shope piggies in recent times .
Many RSPCA branches (but not all) tend to use a private foster home system, so your boys are a lot more used to a home environment, to human interaction and grooming than pet shop babies. They will generally also not put piggies up for adoption unless they are OK with being handled and you will be warned ahead if there are issues/ideosyncracies you should be aware of, which you won't in a shop.
The SSPCA/RSPCA will also support you during the settling in period and will take any adopted piggies back in case you run into serious trouble along the way.
As to rescue piggy personalities: that depends on their background and individual outlook. More than half the piggies fetching up in rescue have started out in a pet shop (or their parents have), so you are often picking up the pet shop pieces and giving them a second chance at a good and dedicated forever home. Surely that is worth something?
Please be aware that guinea pigs are prey animals and not instant cuddly toys; and that the majority of piggies never turn into breathing cuddly toys. This a human misconception, perpetrated and perpetuated by all those online videos that cater to strictly human expectations of cute and funny for hits, but that do not reflect the reality. Who wants to watch videos of piggies getting fed up with being handled after a quarter of an hour and not being happy to be picked up from their cage?
We can help you with tips how you can bring your piggies round in ways that they instinctively understand (piggy whispering) and speed up the process somewhat. We can also help you with tips on how you can avoid upsets when settling into her their new territory in your home (boar guide). But we cannot change guinea pigs as a species; just help you to appreciate them more for what they are and gain a new insight and interest in seeing them in a less human-centric and more cavy-centred way.
You can access our very useful and practical information via these links:
Settling In And Making Friends With Guinea Pigs - A Guide
A Comprehensive Guide to Guinea Pig Boars