I trust neither SpectreCoin and Onion, but I'm moderately invested in SpectreCoin. There's no way I'm going to risk my money by investing in both.
Between SpectreCoin and Onion, I had to pick the lesser of two evils.
i hope nobody forced you to choose either one

(if so, this message is alarming and we should call the police

)
I have my reasons why I chose one of them. But it depends a lot on the development. First moderate warning sign and I'm dumping.