One additional consideration with the QLogic 1400 10 port models is that they only support one E-port per switch. See here under "Technical Specs":
http://www.qlogic.com/Products/SAN_products_FCS_san1400.aspx
This could potentially be a performance bottleneck.
The 5000 series QLogic switches can have multiple E-port links via XPAK (10Gb), or from the SFP (1/2/4Gb) ports.
Loring Weinkauf
Studio Network Solutions
Phone: 877.537.2094
http://www.studionetworksolutions.com