VS-100 and Octa Capture UA-1010

Presale Question
I'm on my way to buy VS-100 and maybe the UA-1010 for more i/o.
 
How is the latency when using them together with a computer, is the 48 sample buffer still availible as it is alone with the UA-1010?

Can I work standalone w/o the computer to expand the VS-100s i/os with UA-1010?

Thanks
/J