This comes up every now and again, the answers to your questions are:
1) Nobody has managed so far, there are problems installing the driver under Wine
2) A native Linux version is not available and considering the amount of work involved in creating such a port, I highly doubt this will be forthcoming any time soon.
However, it should run fine in VMWare Workstation in a Windows VM. I use VMWare Workstation 6.5 myself and am very happy with it. Of course, I run it on an MS Vista host. You can easily attach the BT hardware to the VM through the configuration options, I am sure this applies to the Linux version, too. There are also a few Linux based Open Source VM solutions, kvm, xen, etc. However, I am not sure how well this works as I have experience with ESX and VMWare WS/Server only.
I think you will find that having a dual-boot system will be a lot simpler and less time consuming. Remember, an OS is nothing more than a tool to run applications on. If you can't run the apps you need on it, then it is not the right OS to use. I've used Linux for almost 15 years now, 14 years of that have been in a professional capacity and I still prefer Windows on my desktop
If I need Linux, I use a VM.
There is nothing more evil than an OS that stops you from being productive!
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