I agree... "just try it, and then you'll know."
Certainly, FTP-servers (the computers that respond to your FTP connection requests...) can be told whether-or-not to honor "soft links." (They do this so that visitors can't "jump the fence.") Therefore, by far the easiest and simplest way to determine if this is an issue in your case is ... to simply try it. "Either it works or it doesn't, and either way, 'now you know.' No harm, no foul."
For the Peanut Gallery... A "soft link" is a form of directory-entry that "leads to somewhere else." An FTP-server might reasonably want to confine the visitor to "only 'here'," and therefore might wish to dishonor soft-links. It's really up to the owner of the FTP-site.
Last edited by sundialsvcs; 03-05-2009 at 02:22 PM.