Wiebetech bus-powered FW800 external & daisy chaining...

Please, only people that ALREADY OWN & USE the Wiebetech drive reply. Thanks.
I just bought one - the 500GB. I have three questions:
1) From your experience in running this unit, can I use it on only bus power, in a daisy chain with another FW800 drive if the other drive has a power adapter?
2) What if I have a FW400 drive also plugged in, and the FW400 is connected to the FW400 port and has it's own power adapter?
3) Also, does including a FW400 drive in the loop AFTER the FW800 Wiebetech have any adverse affect on the FW800 speed or it's bus-power?
It sounds like the draw for the 500GB on us power will be running questionably close to the max output on the port. So I'm trying to do some homework ahead of time to see if I might run into any anomalies. Thanks.

tommmy wrote:
Most portable external drives are now bus powered, many don't even have a power input.
I wonder how many bus powered Firewire driives I can daisy-chain.
Use a powered Firewire/USB hub so there is enough power to power the port powered devices.
What happened is port powered devices are cheaper and many people opt for the lower price than the ones with their own power supplies, so it creates a problem and computer makers had to turn off ports drawing too much power from the comptuer, so people have to run out and get powered hubs.

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