What do you secure the iPad with on your spyder?
The X-Mount for the iPad available from RAM Mount as is the x mount for iphones. Be sure to get the right mount for the phone because they ask if you will be using the mount with a case on the phone. Not sure if the mount for the I5 is different from the others.
But the holder is only half the story. You also must find the proper base. Virtually all RAM mount products are three piece: the base, the holder and the piece in between. Its the base that can be a pain sometimes, especially for the handlebars on the RT. I have my iPhone on the left side, a cup holder on the right, and the iPad is in the center. But they are all interchangeable. On the handlebars I have the band clamp. The handlebar has a odd shape, naturally, and a rather large diameter/circumference. Some of the other owners use different configurations. Lamont has his mounts all over the place, even his windshield wing!
I put a outlet box cover mounted to the hub of the handlebar to mount the iPad. Originally I put it there to use with my Magellan navigator from Costco. The only base available was the suction cup and I do not trust those things. I used Gorilla tape to hold the base. It looked tacky but I don't care. Being lost on a $28,000 bike is worse.
The pad will block the display screen on the bike but at 6'1" I can peek over the top without a problem. Screen glare on the pad can be a problem as is temperature alerts if you leave it in the sun for a period of time even at mild temps. But this will be a problem with any glass covered device. The glass magnifies the temp.
Also consider aux power for your device. Any phone that uses location services will use more battery. And it seems more and more apps want to use location services. Would somebody tell me why the flashlight app on my iphone wants to know my location? I'm cheap so I just ran an extension plug in from the rear trunk adapter through the hinge port, under the seat to the glove box area. Be careful of pinch points! I don't use it very often except on extended drives so its unpowered until I need it.
BTW, you do not have to have cell service for the navigation equipment to function because the iPad and iPhone have GPS software, as long as it can see the satellite. You do need the cell service for the extras like where's the nearest gas station, etc.