I know it breaks the principle of doing everything from one device but I have two windows 8 mobile phones. One is my own Nokia Lumia 920, and my work phone is a Nokia Lumia 820.
It does mean carrying two phones but I got my own personal number a few years ago during a period that I didn’t have a work mobile phone and have run with the slight inconvenience of having two with me and the resultant bulk and charging issues.
They both synchronise to my work Outlook e-mail, albeit the personal phone is on manual sync whereas the personal phone is on immediate.
This brings me on to the first issue I hit when I got my work Lumia 820, a few months after my personal phone. Windows Phone 8 introduces some great backup facilities and I have successfully used these on my 920 to recover from a hard reset. I was curious however to understand how this relates to the windows account associated with the phone. To get an answer I pinged a tweet to the rather excellent @WinPhoneSupport to ask whether using the same windows account on both phones would cause problems. Once I got the right question phrasing (the joys of the character limits on twitter) I clarified that unless you use different windows accounts then the backup is not seperate. So to keep the text messages etc seperate from work and personal (as you can guess the personal phone has more chatter) in the backups I had to create a new windows account for the work phone.
This caused an immediate organisational issue for me as a newly avid user of OneNote. Since it appeared on my previous Windows Phone 7 HTC Mozart I have used it as my notes and list maker. This hit a bit of a problem with the SkyDrive storage of notebooks. This would be fine for the storage of photographs but I would need to organise my books to split personal and work again. I had this already at Section level but I had only had one (growing daily) note.
Roll on in time and I have finally split the two books and shared them between accounts so I can see them in onenote on both phones, my work laptop connects using the “work” windows account and I have access everywhere. Perfect. I used the method blogged by Donovan Colbert on TechRepublic on “Collaboration made easy with SkyDrive and OneNote”.