Security is not the issue. BYOC2W is about hooking up to a model office managed virtual infrastructure via an office internet connection.
Consumerisation and the adoption of this area if halted mainly by the users ability to maintain the device i.e. break/fix, and the inability of the company to provide a suitable mechanism to assist in the financing of such assets.
Current finance models can only be associated with the BIK tax (benefit in kind) to the employee, so the adoption fails due to the employee not wishing to spend their hard earned cash on a computer to to their employers work.
The VDI (Virtual Desktop Infrastructure), via whichever flavour you prefer, is a very mature offering, but it currently leverages existing assets for connectivity, or involve a tech-refresh of the desktop devices in line with the current asset depreciation/ lifecycle.
The best approach today appears to be achieved by creating a pre-boot environment on a USB stick, or an isolated environment, to provide connectivity to a company broker system, or by using portals; but agin the issue of end-point device ownership/ control still lingers.