WLAN roaming between vendors

We are replacing our Cisco APs with Aruba, same SSID and same RADIUS server with Aruba as with Cisco. I'm wondering if we're going to get roaming issues in places where the vendors meet? Or is there something we could configure to help the roaming? Will it be smooth, or do we get disconnected Teams/SSH session etc?

We're planning to test this next week but hoping to get some thought beforehand.

Thanks