I am new to QALoad as well. There isn't anyway to see/watch the script replay after it is recorded (like in QARun)? It sure would be helpful and I would be more comfortable with the results knowing for sure that the right actions are being taken within the script, especially after modifications.
QARun's script is GUI script unlike QALoad's scriptl, which is VU (Virtual User) script. You cannot see the playback of VUs on the screen with the application as VU scripts are not taking care of front end part. These scripts just handle the command and response with the server. This holds true in case of other tools also. You can open both the scripts and then compare the difference of the two.
Hope this resolves your query.
A highly advanced bug is indistinguishable from a feature.