What's the device you're connecting to? We use a Juniper SA4500 and you can use the native Playbook client against that with an IKEv2 VPN providing the SA is running version 7+ of the OS.
It basically sounds like you need to connect via an SSL VPN (which is what Pulse on the iOS devices lets you do) but the Playbook doesn't support SSL VPN connectivity natively. You'd need to wait until either Juniper get round to creating a Playbook version of Pulse or get your IT department to offer an alternative method of VPN connectivity - as I say if it's a Juniper SA device you're connecting to, they might be able to offer IKEv2.