Well one thing certain............it is very important to you.
But for what it is worth, I think you are worrying too much about trinkets and symbols and stuff.
When we say that something belongs to Satan are we not actually glorifying him? What does the fellow actually own apart from his own personal truck load of sin that is.
He is a fraud, he is a counterfeiter, he is a liar, he is a murderer.
But he never came up with an original creative idea of his own.
How did he deceive Eve and Adam?.....by working on what the Lord God had already decreed.
How did he attempt to tempt Jesus?....by working on what the Lord God had already decreed.
The story of Peter being crucified in Rome, and upside down at that is probably just that....a story.
Consider John 21:18,19. Peter was to live till he was no longer able to dress himself nor walk. That sounds more descriptive of extreme old age and infirmity rather than being taken out to be executed by crucifixion. Consider too, that by Peter's manner of death, the Lord was to be glorified.
Here we need to be careful. Rev 20:4. Many rush headlong into error thinking that those who literally are beheaded enjoy a special place in eternity, but that idea ignores too much other scripture.
In the same way, crucifying Peter,..................how exactly is the Lord glorified by that?
On the other hand, if Peter kept on feeding the Lord's sheep until his tired old body could no longer sustain his spirit, that would be a glorious testimony to the Lord. I wonder how many of us will be feeding His sheep until we drop, and how many will be saying...."righto I've done my bit for the kingdom..time to vegetate."
The 'peace symbol' in the hands of a pacifist is a symbol of pacifism, in the hands of a fanatical butcher it is a symbol for bloodshed and mayhem. What it is not, is it is not a magic talisman that has any influence over anything.
Please consider things carefully before doing an E.J.Hoover