IVC102: IVC102U negative power too low (-9V instead of -10V); will chip still work OK?

Hi,

     We are using the IVC102U in a product design. In our design, we have

the V- (pin 9) set to -9V. In the data sheet, minimum negative power voltage

is listed as -10V. Our prototypes have shown good results, but our design

is out of specification for the IVC102U. Is it worth adding another power rail

to accommodate the -10V power requirements for the IVC102U; or is -9V

close enough?     thanks, Tom