Now only portable versions of the antimalware tools.

Most of the computers with problems don't have internet any more.

So you can you use the tools from an USB-stick

Well, it downloads stuff.

So then you have to run it on a computer with Internet first, then copy the software to the USB stick.

The problem with portable versions is that they're not always updated, and often rely on various hacks or tweaks to get them to work.

for example, most portable version apps require certain command line arguments, copying files to and from certain places, and even then still sometimes leave traces in the registry.

all stuff we would like to avoid as it becomes to much to update whenever a program gets updated.

if the app comes with a portable version, i don't see why not.. like CCleaner has a portable version (zipped up, and just run exe)... but this would only be as long as it doesn't require unnecessary hacking/tweaking.