It's the call from an eminent guy from the Slackware community.
He helped _a lot_ for the 64bit version.
He's not the Slackware ARM (the one i use for SL4P) maintainer, but thanks to him, he made the openJDK ARM package possible.
Having a second version of Slackware for ARM will be great for numerous reasons, he explains that.
Long story short, SL4P will run with hard float, better optimizations, and it will be easier to even recompile the whole distro with the best optimizations.
Another thing, you can also try to convince him to buy a Pandora with the extra money.