Do Human errors find it annoying or will be annoyed if an owner was to adopt there human ink or another human ink?
Would they displeased if it was a different ink then the one then what they where formed with?
Is it good or not to adopt them both or separately after a while? 
It depends on the Error and Ink.
If you are wanting to adopt only one of them we can help match you to an Ink or Error that would rather be alone.
If you would prefer to adopt together we can help find you a couple who would rather not separate. we refuse to split a set that does not want to part ways.
if you want to take time between adoptions we can probably even find you a set with a little tsundere who refuses to admit he would rather not loose his match, and then schedule you to come for his other half.