Hi sonnyboyo
CB ESA will be deducted from your UC £ for £ but it is paid fortnightly, some claimants state that it helps them to budget better as UC is paid monthly, it also pays class 1 NI contributions.
If your circumstances changes, i.e, win the lottery, get an inheritance then your UC may stop but your CB ESA would carry on.
I don't see any disadvantages apart from having to undergo re-assessments but then you also get that on UC if you are placed in the LCWRA group.
Gary
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
