[quote=@Lord Szall]
<Snipped quote by Crimson Raven>

It doesn't [i]really[/i] make a difference. RP relies heavily on groups posting together anyways, so having partners as separate players is absolutely fine. No matter what RP, speed will always be dependant on the motivation of the people involved, changing how many people we control won't play a huge part into the speed. If anything, Roleplaying on your own with two people will actually likely de-value the importance of groups cooperating together. 
[/quote]

When in reality if you're going to pony up with a friend or someone you know it's easier to say that. While with strangers you're putting a lot on yourself and your partner to be here consistently regardless of legitimate reasons to pull someone away from RP. If you and the other person want to go balls to the wall, sure. It would be equally prudent to have a back up plan or character to cover for absences and or unexplained disappearances.