For work purposes I really need to get an understanding of servlets and JSPs.... I would like to know if it is possible to do the SCWCD
Of course it's possible to
study for it! You just can't formally take the exam. But who said you can't learn loads about Java Web development without sitting a multiple-choice
test? If it makes sense for you to study both SCJP and SCWCD in parallel, then why not do it?!
Charles Lyons (SCJP 1.4, April 2003; SCJP 5, Dec 2006; SCWCD 1.4b, April 2004)
Author of OCEJWCD Study Companion for Oracle Exam 1Z0-899 (ISBN 0955160340 / Amazon Amazon UK )