Focusing screen for Sinar P - need advice

[mikkal]

Hi folks,
is anyone here using following focusing screen for your sinar ?

http://www.ebay.com/itm/Yanke-2-in-1-Ultra-Bright-Fresnel-Ground-Glass-For-Toyo-Sinar-Horseman-Wista-4x5-/281105774191?pt=LH_DefaultDomain_0&hash=item417335b66f

Thank you very much for your advice.

Mike