Why not make your own garb? Making a T-tunic is easy and instructions can be
found on many internet sites. Leather sandles, loafers, and hiking boots
make great shoes (using the 10 foot rule) and rope could be used as a belt.
Or you could buy something when you get onsite. For pants, you could get
away with some black sweats, but flanel pants would be even better.
A friend of mine got everything from garb (inlcuding cloak) to feast gear,
from Wal-mart. He was going to teach a class on it and do a field trip, but
he has since moved away :(.
To answer your original question, it would not be severly frowned upon,
however, my guess is that you would not make such an easy transition into
the event and thus, not get the full experience. I strongly recommend you
get your own stuff.
>From: "J and D" <seafoodguy2001@...>
>Subject: [SCA Newcomers] ok one more
>Date: Fri, 04 Jun 2004 18:55:31 -0000
>the wife has a work freind who has loned her a costume for an
>upcoming event i have no such freinds :( however i would still like
>to go if being a newbie how badly would i be looked upon being out