I think so... I have two. It makes the Tamas happy and if you want, play games, mate... It's better then having one. I can also vouch for my silly V2s. Those are also worth it.... It's worth it as long as you enjoy it.
A V5, normally you can catch them doing "stuff" easyier with one slightly ahead of the other. Like training times or when they need the bathroom.... What time they are doing certain stuff... Etc.