Any circular ND/IR available to buy ?

[Etienne Caron]

I own the Panchro 4x5,6 ND/IR filters, but for a shoot with a lot of handheld with Nikon lens, it will be more valuable to use circular ND/IR combo. Any circular ND/IR available to buy ?

or

Can i put a ND filter with another circular IR filter ? Or the IR will bounce light back to the sensor and create "ghosting" and weird effect ?

thanks