Thunking case sensitivity

[PerilousApricot]

Looking at the code, I assume the answer is "no", but -- is there a way to have the backend expose a case-insensitive filesystem on the host as a case-sensitive filesystem to the guest? My use-case would be to expose a host's HFS+ filesystem (on osx) as a case-sensitive filesystem to linux guests instead of ~20GB files mounted as block devices.