They should work fine. If you are doing any type of high voltage work you probably want the 100X (2301C) version. There are two issues with the 10X 2301B, the much lower voltage rating and the input capacitance. Even if you don't exceed its 600V rating, your scope may not be able to make use of it at those voltages. 5 divisions at 10V/div x 10 is 500V from the bottom of the screen to the top. The input capacitance of the 2301C is <6pF, which is good for higher voltage and frequency combinations. The 2301C is 10-12pF, which is less good.
The documentation isn't great, but I think they intend the 2301C to be rated at 5kV DC + ACpk not ACp-p. So +/- 5000 volts max. That's a lot! I've used mine at 2000Vrms @ 20kHz, although I can't recommend that as an everyday thing. Just remember that the voltage rating goes down with frequency.