[LWJGL][Slick2d] How can I combine the forces?

Rayvolution has found a nice way to get the best of both worlds when it comes to LWJGL and Slick2D. How can you combine LWJGL with Slick2D? How can you use the simplicity of slick with LWJGL?

I’d like to keep the simplicity of Slick rendering to an extent but have the extra features that LWJGL brings to the table. Is that possible?