SAP BW and BO Universe on HANA

Hi Experts,

I'm trying to teach myself SAP HANA and want to clarify few questions I have with what I have studied so far :

1) Can one HANA unit/Appliance be used as a data source for both BW and BO Universe where the data is coming from a number of SAP and non SAP source systems ?

2) Do we yet have the ability to use non SAP reporting tools on HANA ?

and the next question has confused me the most

3) difference between HANA as a Data Source for BW and BW as a source system for HANA ?

Any help on this will be really appreciated .

Thanks

Gaurav