Welcome to the Brotherhood of Gun Carriers.
Like most people, you are most concerned about which gun to carry, which is the least important factor in surviving a violent assault. Your SIG is as good as any, so enjoy it. It'll do just fine. But understand, gunfighting is more about software than hardware.
Start with Jeff Cooper's Principles of Personal Defense. (Available free online on pdf.)
Read Massad Ayoob. Read John Farnam. Read Tom Givens. Here's an example.
https://rangemaster.com/wp-content/uploads/2020/03/Givens_Willingness_v2.pdf
And carry always, always, always.
Like most people, you are most concerned about which gun to carry, which is the least important factor in surviving a violent assault. Your SIG is as good as any, so enjoy it. It'll do just fine. But understand, gunfighting is more about software than hardware.
Start with Jeff Cooper's Principles of Personal Defense. (Available free online on pdf.)
Read Massad Ayoob. Read John Farnam. Read Tom Givens. Here's an example.
https://rangemaster.com/wp-content/uploads/2020/03/Givens_Willingness_v2.pdf
And carry always, always, always.