Editing a TIFF file in Color Efex Pro 4 or Silver Efex Pro 2

[batmura]

Because I do not have Photoshop, I edit all my images in Lightroom. Every once in a while, I feel the need to edit an image in, say, Viveza and once I'm done the photo is sent back to Lightroom in TIFF format. I was wondering if TIFF files can still be successfully edited without compromising image quality. If not, what is the most effective way of editing an image with multiple plugins outside of Photoshop?